It is the reality - you can not see where held open curiosity was initiated (and is or is not still holding) from the Forex market if you don't have access to realtime order flow. In the CME FX tools we have realtime BID/ASK differential data through Cumulative Delta Tools - span!
Sometimes you do not know exactly what you do not know. BTW, the large liquidity participants who trade stocks constantly track open curiosity and where's held inventory - to know what pricing amounts hold any accessible source of inventory and how much. Large industrial participants aren't utilizing fibs and MACD's to create their trades.